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Cited by 375

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Interlocked Feedback Loops Within the Drosophila Circadian Oscillator

Glossop, Nick R. J., Lyons, Lisa C., Hardin, Paul E.·1999·Science

Abstract

Drosophila Clock ( dClk ) is rhythmically expressed, with peaks in mRNA and protein (dCLK) abundance early in the morning. dClk mRNA cycling is shown here to be regulated by PERIOD-TIMELESS (PER-TIM)–mediated release of dCLK- and CYCLE (CYC)–dependent repression. Lack of both PER-TIM derepression and dCLK-CYC repression results in high levels of dClk mRNA, which implies that a separate dClk activator is present. These results demonstrate that the Drosophila circadian feedback loop is composed of two interlocked negative feedback loops: a per-tim loop, which is activated by dCLK-CYC and repressed by PER-TIM, and a dClk loop, which is repressed by dCLK-CYC and derepressed by PER-TIM.

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Crossref · 10.1126/science.286.5440.766

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Metadata

Authors
Glossop, N. R. J., Lyons, L. C., & Hardin, P. E.
Venue
Science
Published
1999-10-22
Volume
286
Issue
5440
Pages
766-768
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2118967648
Cited by
375
References
1
FWCI
13.30
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Interlocked Feedback Loops Within the Drosophila Circadian Oscillator. https://app.cochat.ai/papers/10.1126/science.286.5440.766
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Glossop, N. R. J., Lyons, L. C., & Hardin, P. E. (1999). Interlocked Feedback Loops Within the Drosophila Circadian Oscillator. Science. https://doi.org/10.1126/science.286.5440.766

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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